case rate的用法和樣例：
例句
- With aging, the detectable rate of gingival bleeding and calculus was increasing, the prevalence of JP was also increasing.
隨著(zhù)年齡的增長(cháng)，牙齦出血及牙石的檢出率逐漸上升，牙周炎的患病率也逐漸增高。 - BCG polyose nuclear acid injection can reduce the incidence rate of plasmodium virus asthma.
卡介菌多糖核酸注射液能降低呼吸道合胞病毒感染后哮喘患病率。
